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Euphorbia tirucalli L.-comprehensive characterization of a drought tolerant plant with a potential as biofuel source.

Hastilestari BR, Mudersbach M, Tomala F, Vogt H, Biskupek-Korell B, Van Damme P, Guretzki S, Papenbrock J - PLoS ONE (2013)

Bottom Line: Of late, decrease in mineral oil supplies has stimulated research on use of biomass as an alternative energy source.Climate change has brought problems such as increased drought and erratic rains.Malate measurement indicates that there is induction of CAM in leaves following drought stress.

View Article: PubMed Central - PubMed

Affiliation: Institute of Botany, Gottfried Wilhelm Leibniz University Hannover, Hannover, Germany.

ABSTRACT
Of late, decrease in mineral oil supplies has stimulated research on use of biomass as an alternative energy source. Climate change has brought problems such as increased drought and erratic rains. This, together with a rise in land degeneration problems with concomitant loss in soil fertility has inspired the scientific world to look for alternative bio-energy species. Euphorbia tirucalli L., a tree with C3/CAM metabolism in leaves/stem, can be cultivated on marginal, arid land and could be a good alternative source of biofuel. We analyzed a broad variety of E. tirucalli plants collected from different countries for their genetic diversity using AFLP. Physiological responses to induced drought stress were determined in a number of genotypes by monitoring growth parameters and influence on photosynthesis. For future breeding of economically interesting genotypes, rubber content and biogas production were quantified. Cluster analysis shows that the studied genotypes are divided into two groups, African and mostly non-African genotypes. Different genotypes respond significantly different to various levels of water. Malate measurement indicates that there is induction of CAM in leaves following drought stress. Rubber content varies strongly between genotypes. An investigation of the biogas production capacities of six E. tirucalli genotypes reveals biogas yields higher than from rapeseed but lower than maize silage.

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Effect of water limitation on (A) plant height,(B) root length, (C) shoot dry weight, (D) shoot water content and (E) root/shoot ratio of E.tirucalli genotypes Morocco and Senegal after 8 weeks drought stress treatment.Vertical error bars denote standard error of mean (SEM), n = 5.
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pone-0063501-g002: Effect of water limitation on (A) plant height,(B) root length, (C) shoot dry weight, (D) shoot water content and (E) root/shoot ratio of E.tirucalli genotypes Morocco and Senegal after 8 weeks drought stress treatment.Vertical error bars denote standard error of mean (SEM), n = 5.

Mentions: Plant height was significantly reduced by applying drought stress in the experiment (Fig. 2A). It decreased in line with the decrease in VWC (%). Average plant height before treatment was 29.06 cm for Morocco and 27.93 cm for Senegal. After eight weeks the highest height of genotype Morocco was with plants grown in VWC 25% (54.30±1.48 cm) whereas lowest values were obtained in VWC 5% (40.30±1.89 cm). Genotype Senegal had the highest (54.91±3.45 cm) and the lowest (32.80±0.86 cm) heights in the same respective VWCs. Plant height decreased linearly with decrease in water content. Thus, genotype Morocco grew by 86.85% at normal water content and 38.67% at high water limitation. Meanwhile, growth in genotype Senegal was 96.59% at VWC 25% and 17.43% at VWC 5%. Growth percentage showed that genotype Senegal grew faster than genotype Morocco when water was well available, but that drought highly decreased the growth rate.


Euphorbia tirucalli L.-comprehensive characterization of a drought tolerant plant with a potential as biofuel source.

Hastilestari BR, Mudersbach M, Tomala F, Vogt H, Biskupek-Korell B, Van Damme P, Guretzki S, Papenbrock J - PLoS ONE (2013)

Effect of water limitation on (A) plant height,(B) root length, (C) shoot dry weight, (D) shoot water content and (E) root/shoot ratio of E.tirucalli genotypes Morocco and Senegal after 8 weeks drought stress treatment.Vertical error bars denote standard error of mean (SEM), n = 5.
© Copyright Policy
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC3643915&req=5

pone-0063501-g002: Effect of water limitation on (A) plant height,(B) root length, (C) shoot dry weight, (D) shoot water content and (E) root/shoot ratio of E.tirucalli genotypes Morocco and Senegal after 8 weeks drought stress treatment.Vertical error bars denote standard error of mean (SEM), n = 5.
Mentions: Plant height was significantly reduced by applying drought stress in the experiment (Fig. 2A). It decreased in line with the decrease in VWC (%). Average plant height before treatment was 29.06 cm for Morocco and 27.93 cm for Senegal. After eight weeks the highest height of genotype Morocco was with plants grown in VWC 25% (54.30±1.48 cm) whereas lowest values were obtained in VWC 5% (40.30±1.89 cm). Genotype Senegal had the highest (54.91±3.45 cm) and the lowest (32.80±0.86 cm) heights in the same respective VWCs. Plant height decreased linearly with decrease in water content. Thus, genotype Morocco grew by 86.85% at normal water content and 38.67% at high water limitation. Meanwhile, growth in genotype Senegal was 96.59% at VWC 25% and 17.43% at VWC 5%. Growth percentage showed that genotype Senegal grew faster than genotype Morocco when water was well available, but that drought highly decreased the growth rate.

Bottom Line: Of late, decrease in mineral oil supplies has stimulated research on use of biomass as an alternative energy source.Climate change has brought problems such as increased drought and erratic rains.Malate measurement indicates that there is induction of CAM in leaves following drought stress.

View Article: PubMed Central - PubMed

Affiliation: Institute of Botany, Gottfried Wilhelm Leibniz University Hannover, Hannover, Germany.

ABSTRACT
Of late, decrease in mineral oil supplies has stimulated research on use of biomass as an alternative energy source. Climate change has brought problems such as increased drought and erratic rains. This, together with a rise in land degeneration problems with concomitant loss in soil fertility has inspired the scientific world to look for alternative bio-energy species. Euphorbia tirucalli L., a tree with C3/CAM metabolism in leaves/stem, can be cultivated on marginal, arid land and could be a good alternative source of biofuel. We analyzed a broad variety of E. tirucalli plants collected from different countries for their genetic diversity using AFLP. Physiological responses to induced drought stress were determined in a number of genotypes by monitoring growth parameters and influence on photosynthesis. For future breeding of economically interesting genotypes, rubber content and biogas production were quantified. Cluster analysis shows that the studied genotypes are divided into two groups, African and mostly non-African genotypes. Different genotypes respond significantly different to various levels of water. Malate measurement indicates that there is induction of CAM in leaves following drought stress. Rubber content varies strongly between genotypes. An investigation of the biogas production capacities of six E. tirucalli genotypes reveals biogas yields higher than from rapeseed but lower than maize silage.

Show MeSH
Related in: MedlinePlus